Commentaries:
Robertson's Word Pictures (NT)
They gathered (sunhgagen). Second aorist active indicative of sunagw, singular (the three unclean spirits), like ekporeuetai in verse Revelation 16:14.
Har-Magedon (ar-Magedwn). John proceeds now after the interruption in verse Revelation 16:15. Perhaps "the mountains of Megiddo" though not certain. Megiddo is in the valley of Esdraelon, and by the waters of Megiddo (the Kishon) Israel gained a decisive victory over Sisera (Judges 5:19), celebrated in Deborah's song. See also Revelation 20:8 ff. and Ezekiel 39:2, Ezekiel 39:4.
Other Robertson's Word Pictures (NT) entries containing Revelation 16:16:
John 5:2
Revelation 9:11
Revelation 19:17
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